Pulley-clutch.



No. 842,587. PATBNTED JAN. 29, 1907. M..& c. sKoGsT. \D.

PULLEY CLUTCH. APPLIGATION FILED 11H14, 190e.

MM; marian shpfm- I ably secured #STATES ATENT OFFICE.

GRAND MEADow,

PuLLEY-cLuTol-i.

lSpecification of Letters Patent.

Patented J an. 29, 1807 Applloatonled May 14, 1906. Serial No. 316,650.,v

To a/ZZ whom't't may concern: w Be it known that we, MARTIN SKoGsTAD and CLARENCE 'SKoGsTAD, citizens of .the United States, residing at Grand Meadow, 5 in -thecountyof Mower and State of Minne sota, have invented certain new and useful Im rovements in Pulley-Clutches; and -we do ereby declareiithe following to be a full, clear, and exact description of the invention, such'as will enable others skilled in the art to which it appe'rtains to make and use the same. Our invention has for its obj ect to rovigle an improved one-,way pulley and sha t coupling or clutch; and to this end it consists of .the novel devices and combinations of devices hereinafter describedf and defined in the'claim. y Y

In the accompanyi drawings, which illustrate our invention, like characters indizo ycate like parts throu hout the several views. Referring to the rawiigs, Figure 1 is a view in side elevation showing a pulley equipped with one of. our improved couplin s. Fig. 2 is a side elevation of the said pu ley. andv coupling withone plate of the pulley removed; and Fig. 3 is a vertical section through'the pulley and clutchon the of Fig. 2, some parts being'shown in The numeral l indicates a pulley rim, whichis formed with a'central internal rib or flange 2. The hub 3 of the pulley is made up of laterallyspaced sections, each of whichisv integrally formed with or rigidly secured to a disk-like side plate 4. These side plates 4 attheir margins bearagainst the o posite faces of the rib 2 and are rigidly, but detach-Y thereto by nutted bolts 5. The hub-sections3 run loosely upon a shaft 6; A .ratchet-wheel '17, which is keyed or otherwise rigidly secured to the shaft 6, is located between-the side `plates 4'\and is entirely-incased'thereby and' by the .pulley-rim. The internal flange 2 of thepulley-rim 1 -is formed -with seats 8, in.. hich are loosely pivoted clutch-dogs 9, that coperatewith the teeth of the ratchet-Wheel and are yieldingly held 'fin engagement therewith 4by springs 10, shownas mounted in suitable seats 11, also 5o formed in the said-rib2. It willl thus beseen vthat all of the frictionally-engaging arts of be caused to run or work in the oil.

the clutch-to wit, the ratchet-whee 7 ,v the,v

dogs or pawls 9, and the springs IO-are inclosed within a casing made u of the side plates and rim of the pulley. his inclosed s ace may contain la large amount of oil, so tiiat4 the said frictionally-engaging parts will In order that oil may be readily inserted into the said space or chamber, one of the side plates 4 is s own as provided with a normally plugged oil-hole. l2, which when opened will permit the tip of an oil-,can to be inserted into the said chamber.

If the shaft 6 be assumed to be the driving member and to be rotated in the direction of the karrow marked adjacent thereon on Fig.

2, the pulley will be positively driven in the same direction; but if the shaft be suddenly stopped or retarded in movement the said pulley will be permitted to freely run ahead of said shaft in the direction indicated under the momentum which said pulley and other parts. driven therefrom may have acquired.

fthe pulley be thedriving member, then the action above described that is, the pulley being rotated in the direction opposite to that shown bythe arrow in Fig. 2 the shaft will be positively driven in the same direction and will be ermitted to g run ahead of said pulley in that irection'.

A device of the above kind is ada ted for a great many diler'entuses. It is a l'apted f or use at different places on the threshing-ma- Chine and is particularly adapted for apfplication in the driving 'mechanism to the an or blower, with the said clutch so arranged that the blower or fan may' continue to run under acquired momentum when the threshingsuddenly stopped or-slowed down.

cylinder and other parts of the separator areV will be reversed- The device describeais of Small @0S-t and is 'sufficient for the purposes had in view. The

device is dust and`moisture ..proof, and hence will last ,for a long time. a

We y.l'aim as our invention- T ing n internal rib 2, of thel separable side plates 4 embracing said rib 2, aplurality of nutted bolts passed through said two lates 4 and the intermediate rib 2,and rigi y but detachably connecting. the same, said plates having hub portions 3, .a shaft 6 loosely journaled to the hubs 3, a ratchet-wheel 7 secombination with a pulley-rim 1 hav- IOO l.

`cured to said shaft and Workirig in the space between said` side plates 4, and a'plurality of spring-pressed @hitch-dogs mounted in the seatsformed in said rib 2 and en with the teeth of said ratchet-Whee 7, said side plates and pulley-rim affording a chamber inclosing the frictionally-engagin parts of the clutch, substantially as describe.

ageable tures`in presence of two Witnesses.

MARTIN sKoGsTAD. CLARENCE sKoGsTAD.

Witnesses:

' P. SGHLEIYER,

A. F. SCHLEIYER. 

